Secondhand 2.2kg Portable Oxygen Concentrator Inogen One G3

Objective AI Report

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Report date: 14.02.2026

Inogen One G3 Portable Oxygen Concentrator Analysis Report

Device Identification

The product analyzed in the visuals is a portable oxygen concentrator device designed for patients requiring respiratory support, capable of operating with battery or external power. The device consists of an upright main unit and carrying/charging equipment.

Brand and Model

Upon examining the device’s iconic design, the button layout on the top panel (warning triangle, plus, minus, bell, and power icons around the LCD screen), and the characteristic structure of the ventilation grilles, the product has been identified as an Inogen One G3. The label format on the rear of the product also aligns with medical device labeling standards for this model.

Originality

The product’s casing structure, button quality, plastic joint points, and the perfect compatibility of its accessories (especially the carrying bag) with the device indicate that it is an original Inogen production. No signs of aftermarket or counterfeit products have been observed.

Areas of Use

This device is manufactured to meet the oxygen needs of patients suffering from COPD (Chronic Obstructive Pulmonary Disease) or other respiratory insufficiencies. Being in the “portable” category, it allows patients to continue their oxygen therapy outside the home, during travel (on planes, in vehicles), or during their daily activities.

Quantity Information

A total of 5 items and accessories are present in the visual:

• 1 Oxygen Concentrator (Main unit)
• 1 Carrying Bag (Black, with strap)
• 1 AC Power Adapter (Large black box resembling a brick)
• 1 AC Power Cable (Standard plug end)
• 1 DC Car Charging Cable (Cigarette lighter input)

General Condition

The product appears to be in used (second-hand) condition, but its overall cleanliness is good. Signs of yellowing on the device’s white casing are minimal, suggesting that the device has not been exposed to excessive sunlight or has been well-protected. The set includes the main accessories necessary for basic use.

Physical Deformity

No deep cracks, breakages, or disintegration have been detected on the device’s outer casing. The corners and carrying handle appear robust. While typical dullness due to use might be present on the white plastic surface, no noticeable severe impact marks are found.

Mechanical Components

The carrying handle located on the upper part of the device retains its integrity. The air intake filters (mesh structure) on the side panels are observed to be in place. The bag’s clips and stitching appear visually sound.

Electronic Components

The LCD screen and control buttons on the device’s top panel are physically in place. The device’s power input socket is visible on the side and shows no dents. No breaks or fraying are observed at the cable connection points of the adapters.

Accessories

Accessories have been examined in detail:

• Carrying Bag: Black in color, specially manufactured for the device, a protective bag with mesh sections allowing air intake and exhaust. Its straps appear sturdy.
• Power Adapter: A large-sized adapter with an appearance suggesting it is original or a high-quality equivalent.
• Cables: Two cables are present. One is for a standard wall outlet, and the other is a car cigarette lighter (DC) cable, which is vital for use during travel. The cables are neatly coiled, indicating careful storage.

Battery Status

In this model (Inogen One G3), the battery typically has a modular structure that locks into the base of the device. In the visual, an extra extended (double) battery protrusion beneath the device cannot be clearly discerned; it is likely that a standard (single) battery integrated into the device’s base is installed, or the battery slot is empty. Visually, no information can be obtained regarding the battery’s charge level or health.

Label Information

On the rear side of the device, there is a large, multi-line information label. Due to the resolution and distance of the photograph, the Serial Number (SN), Reference Code (REF), and Lot number cannot be clearly read. However, the presence of the label and its intact condition are positive for the device’s traceability.

Screen Analysis

Since the device is in the off position, no error codes, oxygen purity levels, or battery life information can be displayed on the LCD screen.

Potential Malfunction Risk

During the visual inspection, no broken, rusted, or detached parts that would impede the device’s operation have been identified. No crushing or fraying is observed on the cables. In light of these physical data, the immediate potential malfunction risk appears low. However, since it cannot be determined visually whether the device’s technical maintenance (such as column/sieve bed replacement) has been performed, the user should independently check the lifespan of these parts.